Improved school-desk and seat



iinitrd States AARONCHANDLER, or D AvnNPmiT,l IOWA.

Letters Patent No. 94,473, dated September 7, 1869.

IMPRO'VED SCHOOLJDBSK AND SEAT.

The Schedule referred to in these Letters Patent and making part: of the same.

thereof, reference being had to the accompanying drawings, in which- V 4 Figure l is a perspective view of my desk and seat;

Figure 2 is a detached sectional view of the hinge, seat, arm, slot, and standard;

Figure 3 is a plane front view;

Figure 4 is a side elevation of the desk, showing the book-box held in a horizontal position by means of a locking-device; and

Figure 5 is a side elevation of the desk, with the hook-box thrown down in avertical position.

The same letters of reference indicate corresponding parts in the several h'gures.

The nature of my invention consists in having the standards of a school-desk provided with slotted or wedge-shaped lugs, for supporting the arms of the seat when in a horizontal position; also, an auto matic locking-device for supporting the book-box, when in a horizontal position, hereinafter more fully described.

A represents a book-box, the end pieces of whichl is hinged in any convenient manner upon the projection E, upon the standard S. The lug C has a deep wedge-,shaped notch, or slot D, cut in itfrom the top, toreceive the lower or sharp part ofthe arm B,'when the seat is let down. This slot is not as wide at its lower part as the thickness of the arm that rests init, so that the arm rests against the sides of the slot, and not on the bottom thereof. When it is desired to have the seat out of the way, it is simply folded upward and backward, as at iig 3. When it is desired to use the seat, it is let down so that the arm B of the seat rests inthe wedge-shaped slot D, thus acting as a support for the seat,I and wedging down into the slot, so there is no lateral motion in either direction. It also deadens the noise of the falling seat.

lhe automatic locking-device consists in a sliding bolt or bar, N, working in a slot on the Standard, and held in place by a cross-piece, or strip O, as clearly shown in iigs. 4 and 5.

The book-box is provided with two pinsv P P', on each side, working in 'corresponding slots or grooves a c in the standards S. 4When the book-box is raised in a horizontal position, the pins rest in the recesses or shoulders R R. A

The opera-tion is a follows:

When the book-box is to be raised in a horizontal position, the lower pin P, on one side of the bookbox, raises the sliding bolt, or bar N, until the pins are about level with the recess, or shoulder R, in the standard. Then the book-box is to be pushed forward on the shoulders, which releases the sliding bolt or bar, and allows it to drop down into its Original position, thus entirely enclosing the pin T in the recess, or shoulder When the book-box is to be lowered, the sliding bolt or bar is raised, and the hook-box is pressed back until the pins are off from the shoulders, which allows the pins to slide down the grooves or slots in the standards S S, which brings the book-box into a vertical position.

Having thus described the natlueconstruction, and operation of my invention,

What I claim therein as new and useful, and desire to secure byy Letters Patent, is

1. The standards S S, provided with'the slotted or wedge-shaped .lugs C, in combination with the arms B of the seat H, constructed as herein described, for the purposes specified.

2. The automatic locking-device N, when used in combination with the book-box A and slotted standard S, constructed and arranged to-operate as herein described, for the purposes specified.

" AARN CHANDLER.

Witnesses:

HAinusoN OGBORN, W. L. GARROLL... 

